Here is my code:

Code:
<?php
session_start();
include ("Includes/database_info.php");
mysql_select_db("a1401476_records", $con);
$sql="INSERT INTO products (Title, Description, Seller, Picture, Condition, Price, Country, Province, City, School, Campus, Grade, Class) 
VALUES ('$_POST[title]','$_POST[description]','$_SESSION[username]','$_POST[image]','$_POST[condition]','$_POST[price]','$_POST[country]','$_POST[province]','$_POST[city]','$_POST[school]','$_POST[campus]','$_POST[grade]','$_POST[class]')";
if (!mysql_query($sql,$con))
  {
  die('Error: ' . mysql_error());
  }
mysql_close($con);
?>
The include file contains the database info.

Here is my html form.

Code:
<div>
<form action="sell.php" method="post">
<b>Seller's Username</b>: <?php echo $_SESSION['username']; ?> <br /><a href="logout.php">If you are not <?php echo $_SESSION['username']; ?> then click here to logout.</a><br /><br />
<b>Title</b>: <input name="title" type="text"></input>
<br />
<b>Short Description</b>:<br /> <textarea name="description" rows="5" cols="25"></textarea> 
<br /><br /> 
<b>School</b>: <input name="school" type="text"></input><br /> 
<b>Campus</b>: <input name="campus" type="text"></input><br /> 
<b>Grade</b>: <input name="grade" type="text"></input><br /> 
<b>Class</b>: <input name="class" type="text"></input><br /> 
<br /> 
<b>Condition</b>: 
<select name="condition">
<option value="excelent">Excelent</option>
<option value="good">Good</option>
<option value="poor">Poor</option>
</select>
<br /><br />
<b>Price</b>: <b>$</b><input name="price" type="text"></input><br /><br /><br /> 
<p>If you choose to include an image then upload the image to a file sharing site such as <a href="http://www.photobucket.com">Photobucket</a>, then supply the direct link below.</p>
<b>Image of Textbook</b>: <input name="image" type="text"></input>
<br /><br />
<input type="submit" value="Sell your Textbook"></input>
</form> 
</div>
I am getting an error when i submit the form and no it shouldn't be related to the length of the input...

Error:
Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Condition, Price, Country, Province, City, School, Campus, Grade, Class) VALUES' at line 1
I used this exact code with a few modifications for my register/login page and it worked perfectly. What is wrong? It works fine if you just enter regular strings but i need to be able to use $_POST.